Question 1

An AM radio station broadcasts at a frequency of 1270 kHz. Calculate the wavelength of the broadcast signal in meters. (c = 2.9979 * 108 m/s)

Accepted Answer

The answer of An AM radio station broadcasts at a...

Question 2

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = -2.18 * 10-18 J(1/n2)

Accepted Answer

A) 97.2 nm 
B) 82.6 nm 
C) 365 nm 
D) 0.612 nm 
E) 6.8 * 10-18 nm 
A) 97.2 nm 
B) 82.6 nm 
C) 365 nm 
D) 0.612 nm 
E) 6.8 * 10-18 nm

Question 3

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow. Of these colors, ______ has the least energy.

Accepted Answer

The answer of The colors of the visible spectrum are...

Question 4

A neon atom in its ground state will be diamagnetic.

Accepted Answer

A) True 
 B)False

Question 5

What is the electron configuration of calcium?

Accepted Answer

1s²2s²2p⁶3s²3p

Question 6

A ground-state atom of arsenic has

Accepted Answer

A) no unpaired electrons. 
B) one unpaired electron. 
C) two unpaired electrons. 
D) three unpaired electrons. 
E) four unpaired electrons. 
A) no unpaired electrons. 
B) one unpaired electron. 
C) two unpaired electrons. 
D) three unpaired electrons. 
E) four unpaired electrons.

Question 7

Which ground-state atom has an electron configuration described by the following orbital diagram?

Accepted Answer

A) phosphorus 
B) nitrogen 
C) arsenic 
D) vanadium 
E) none of these 
A) phosphorus 
B) nitrogen 
C) arsenic 
D) vanadium 
E) none of these

Question 8

Write the ground state electron configuration for an iodine atom.

Accepted Answer

The answer of Write the ground state electron configuration for...

Question 9

What is the ground-state electron configuration for chlorine?

Accepted Answer

1s²2s²2p⁶3s²3p

Question 10

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J? (mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)

Accepted Answer

6.4 * 10<s

Question 11

If a hydrogen atom and a helium atom have the same kinetic energy,

Accepted Answer

A) the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom. 
B) the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium. 
C) the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom. 
D) the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom. 
E) the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom. 
A) the wavelength of the hydrogen atom will be about 4 times longer than the wavelength of the helium atom. 
B) the wavelength of the hydrogen atom will be about 2 times longer than the wavelength of the helium. 
C) the wavelength of the hydrogen atom will be roughly equal to the wavelength of the helium atom. 
D) the wavelength of the helium atom will be about 2 times longer than the wavelength of the hydrogen atom. 
E) the wavelength of the helium atom will be about 4 times longer than the wavelength of the hydrogen atom.

Question 12

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Accepted Answer

A) 5.7 * 10-4 m 
B) 9.5 * 10-31 m 
C) 2.8 * 10-7 m 
D) 9.5 * 10-28 m 
E) 5.7 * 10-7 m 
A) 5.7 * 10-4 m 
B) 9.5 * 10-31 m 
C) 2.8 * 10-7 m 
D) 9.5 * 10-28 m 
E) 5.7 * 10-7 m

Question 13

Which element has the following ground-state electron configuration? [Kr]5s14d5

Accepted Answer

A) Mn 
B) Mo 
C) Nb 
D) Re 
E) Tc 
A) Mn 
B) Mo 
C) Nb 
D) Re 
E) Tc

Question 14

A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga)in its ground state is

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 15

Which choice lists two elements with ground-state electron configurations that are well known exceptions to the Aufbau principle?

Accepted Answer

A) Cu and C 
B) Cr and Cu 
C) Cs and Cl 
D) Rb and Co 
E) Fe and Co 
A) Cu and C 
B) Cr and Cu 
C) Cs and Cl 
D) Rb and Co 
E) Fe and Co

Question 16

The second line of the Balmer series occurs at a wavelength of 486.1 nm. What is the energy difference between the initial and final levels of the hydrogen atom in this emission process?

Accepted Answer

A) 2.44 * 1018 J 
B) 4.09 * 10-19 J 
C) 4.09 * 10-22 J 
D) 4.09 * 10-28 J 
E) 1.07 * 10-48 J 
A) 2.44 * 1018 J 
B) 4.09 * 10-19 J 
C) 4.09 * 10-22 J 
D) 4.09 * 10-28 J 
E) 1.07 * 10-48 J

Question 17

What is the total number of electrons possible in the 2p orbitals?

Accepted Answer

The answer of What is the total number of electrons...

Question 18

Write the ground state electron configuration for the selenium atom.

Accepted Answer

The answer of Write the ground state electron configuration for...

Question 19

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4 l = 3 ml = -2 ms = +1/2

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 6 
E) 10 
A) 0 
B) 1 
C) 2 
D) 6 
E) 10

Question 20

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Accepted Answer

A) True 
 B)False

Exam 7: The Electronic Structure of Atoms

An AM radio station broadcasts at a frequency of 1270 kHz. Calculate the wavelength of the broadcast signal in meters. (c = 2.9979 * 108 m/s)

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen En = -2.18 * 10-18 J(1/n2)

The colors of the visible spectrum are blue, green, orange, red, violet, and yellow. Of these colors, ______ has the least energy.

A neon atom in its ground state will be diamagnetic.

What is the electron configuration of calcium?

A ground-state atom of arsenic has

Which ground-state atom has an electron configuration described by the following orbital diagram?

Write the ground state electron configuration for an iodine atom.

What is the ground-state electron configuration for chlorine?

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10-13 J? (mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10-27 kg)

If a hydrogen atom and a helium atom have the same kinetic energy,

Breaking the oxygen-oxygen bond in hydrogen peroxide requires 210 kJ/mol. What is the longest wavelength of light that can cause this bond to be broken?

Which element has the following ground-state electron configuration? [Kr]5s14d5

A possible set of quantum numbers for the last electron added to complete an atom of gallium (Ga)in its ground state is

Which choice lists two elements with ground-state electron configurations that are well known exceptions to the Aufbau principle?

The second line of the Balmer series occurs at a wavelength of 486.1 nm. What is the energy difference between the initial and final levels of the hydrogen atom in this emission process?

What is the total number of electrons possible in the 2p orbitals?

Write the ground state electron configuration for the selenium atom.

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4 l = 3 ml = -2 ms = +1/2

An electron in a 3p orbital could have a value of 2 for its angular momentum quantum number (l).

Introduction

Atoms, Molecules, and Ions

Stoichiometry

Reactions in Aqueous Solution

Gases

Energy Relationships in Chemical Reactions

The Periodic Table

Chemical Bonding I: the Covalent Bond

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Introduction to Organic Chemistry

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Thermodynamics

Redox Reactions and Electrochemistry

The Chemistry of Coordination Compounds

Nuclear Chemistry

Organic Polymerssynthetic and Natural

Filters

An AM radio station broadcasts at a frequency of 1270 kHz. Calculate the wavelength of the broadcast signal in meters. (c = 2.9979 * 10⁸ m/s)

Calculate the wavelength of the light emitted by a hydrogen atom during a transition of its electron from the n = 4 to the n = 1 principal energy level. Recall that for hydrogen E_n = -2.18 * 10^-18 J(1/n²)

What is the wavelength, in meters, of an alpha particle with a kinetic energy of 8.0 * 10^-13 J? (mass of an alpha particle = 4.00150 amu; 1 amu = 1.67 * 10^-27 kg)

Which element has the following ground-state electron configuration? [Kr]5s¹4d⁵

What is the maximum number of electrons in an atom that can have the following set of quantum numbers? n = 4 l = 3 m_l = -2 m_s = +1/2